Hi. I work at a llama ranch, so the care between the two are not much different. I really think it all depends on the disposition of the animal. Some of our llamas stand calmly in the restraining stocks, and others need to be anesthetized to keep them from hurting themselves or us. From what I hear from the lady who shears for us, they just tie the alpacas and shear them without the stocks. They are herd animals and would do best with a fellow alpaca or llama companion. If they will be pastured with horses or goats, I would recommend females or geldings only. I have found that by putting down 1 to 2 inches of fine gravel on path ways typically used by the llamas/alpacas that it greatly reduces overgrown toenails. Other than that most llamas/alpacas are easy to care for with only the main thing to worry about is the summer heat which can be aided by kiddy pools, fans, fresh water, and electrolytes to keep them hydrated. Good luck on your new venture!
Dan.